div class=trans-pagebutton class=gotoPage data-page=1Page 1button div class=trans-imageimg data-url=document2010-10-08-a-the-ambient-noise-control-circuit-anc-functions-like-high-andhtmlpage=1 data-page=1 class=trans-thumb lazyload alt=Page 1: · 2010-10-08 · • The AMBIENT NOISE CONTROL CIRCUIT ANC functions like high and low filters to cut down background noise it is especially valuable when recording voice • loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader033fdocumentsinreader033viewer20220417135e4940706acc1d22da22f797html5thumbnails1jpg width=140 height=200 divdiv